我正在尝试将 Maya 渲染生成的 exrs 序列转换为 QuickTime 影片。我在 Windows 7（64 位）上运行 ffmpeg。但是，我的 QuickTime 出现黑屏。
>ffmpeg.exe -y -i path_to_frames\Render_Beauty.%04d.exr -codec copy -c:v qtrle path_to_frames\Render_Beauty.mov
ffmpeg version N-66673-gf0d1b3a Copyright (c) 2000-2014 the FFmpeg developers
built on Oct 6 2014 22:10:42 with gcc 4.9.1 (GCC)
configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-av
isynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enab
le-iconv --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --
enable-libfreetype --enable-libgme --enable-libgsm --enable-libilbc --enable-lib
modplug --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrw
b --enable-libopenjpeg --enable-libopus --enable-librtmp --enable-libschroedinge
r --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame --en
able-libvidstab --enable-libvo-aacenc --enable-libvo-amrwbenc --enable-libvorbis
--enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-
libx265 --enable-libxavs --enable-libxvid --enable-zlib
libavutil 54. 9.100 / 54. 9.100
libavcodec 56. 3.101 / 56. 3.101
libavformat 56. 7.104 / 56. 7.104
libavdevice 56. 1.100 / 56. 1.100
libavfilter 5. 1.102 / 5. 1.102
libswscale 3. 1.100 / 3. 1.100
libswresample 1. 1.100 / 1. 1.100
libpostproc 53. 1.100 / 53. 1.100
[exr @ 000000000037f680] Unsupported channel ZBack.
[exr @ 000000000037f680] decode_block() failed.
Last message repeated 1079 times
Input #0, image2, from 'path_to_frames\\Render_Beauty.%04d.exr':
Duration: 00:00:03.12, start: 0.000000, bitrate: N/A
Stream #0:0: Video: exr, rgba64le, 1920x1080 [SAR 1:1 DAR 16:9], 25 tbr, 25
tbn, 25 tbc
path_frames\\Render_Beauty.mov:
No such file or directory
我认为该问题与 exrs 中的 ZBack 频道有关：
[exr @ 000000000037f680] Unsupported channel ZBack.
[exr @ 000000000037f680] decode_block() failed.
我尝试使用更高版本的 ffmpeg（20170921 - 183fd30）进行转换，但最终出现了完全不同的错误消息：
[exr @ 000000000032b120] flags 8 is not implemented. Update your FFmpeg version
to the newest one from Git. If the problem still occurs, it means that your file
has a feature which has not been implemented.
[image2 @ 00000000003286c0] decoding for stream 0 failed
[image2 @ 00000000003286c0] Could not find codec parameters for stream 0 (Video:
exr, none): unspecified size
Consider increasing the value for the 'analyzeduration' and 'probesize' options
关于如何解决这个问题有什么提示吗？
=====更新=====
很奇怪。我针对一些测试文件运行了 ffmpeg 的更新版本（就像我之前做的那样），并收到了一些新的错误消息。
C:\Users\spearsc\Desktop\test_files>R:\_tools\ffmpeg_g183fd30\bin\ffmpeg.exe -y -
i Test_Beauty.%04d.exr -codec copy -c:v qtrle Test_Beauty.mov
ffmpeg version N-87353-g183fd30 Copyright (c) 2000-2017 the FFmpeg developers
built with gcc 7.2.0 (GCC)
configuration: --enable-gpl --enable-version3 --enable-cuda --enable-cuvid --e
nable-d3d11va --enable-dxva2 --enable-libmfx --enable-nvenc --enable-avisynth --
enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enable-iconv
--enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-li
bfreetype --enable-libgme --enable-libgsm --enable-libilbc --enable-libmodplug -
-enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enabl
e-libopenh264 --enable-libopenjpeg --enable-libopus --enable-librtmp --enable-li
bsnappy --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolam
e --enable-libvidstab --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx
--enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable
-libxavs --enable-libxvid --enable-libxml2 --enable-libzimg --enable-lzma --enab
le-zlib
libavutil 55. 76.100 / 55. 76.100
libavcodec 57.106.101 / 57.106.101
libavformat 57. 82.101 / 57. 82.101
libavdevice 57. 8.101 / 57. 8.101
libavfilter 6.105.100 / 6.105.100
libswscale 4. 7.103 / 4. 7.103
libswresample 2. 8.100 / 2. 8.100
libpostproc 54. 6.100 / 54. 6.100
[exr @ 00000000005da8c0] flags 8 is not implemented. Update your FFmpeg version
to the newest one from Git. If the problem still occurs, it means that your file
has a feature which has not been implemented.
[image2 @ 00000000005d7fe0] decoding for stream 0 failed
[image2 @ 00000000005d7fe0] Could not find codec parameters for stream 0 (Video:
exr, none): unspecified size
Consider increasing the value for the 'analyzeduration' and 'probesize' options
Input #0, image2, from 'Test_Beauty.%04d.exr':
Duration: 00:00:00.40, start: 0.000000, bitrate: N/A
Stream #0:0: Video: exr, none, 25 tbr, 25 tbn, 25 tbc
Stream mapping:
Stream #0:0 -> #0:0 (exr (native) -> qtrle (native))
Press [q] to stop, [?] for help
[exr @ 0000000007bf1a40] flags 8 is not implemented. Update your FFmpeg version
to the newest one from Git. If the problem still occurs, it means that your file
has a feature which has not been implemented.
[exr @ 0000000007bf1a40] flags 8 is not implemented. Update your FFmpeg version
to the newest one from Git. If the problem still occurs, it means that your file
has a feature which has not been implemented.
[exr @ 0000000007bf1a40] flags 8 is not implemented. Update your FFmpeg version
to the newest one from Git. If the problem still occurs, it means that your file
has a feature which has not been implemented.
[exr @ 0000000007bf1a40] flags 8 is not implemented. Update your FFmpeg version
to the newest one from Git. If the problem still occurs, it means that your file
has a feature which has not been implemented.
[exr @ 0000000007bf1a40] flags 8 is not implemented. Update your FFmpeg version
to the newest one from Git. If the problem still occurs, it means that your file
has a feature which has not been implemented.
[exr @ 0000000007bf1a40] flags 8 is not implemented. Update your FFmpeg version
to the newest one from Git. If the problem still occurs, it means that your file
has a feature which has not been implemented.
[exr @ 0000000007bf1a40] flags 8 is not implemented. Update your FFmpeg version
to the newest one from Git. If the problem still occurs, it means that your file
has a feature which has not been implemented.
[exr @ 0000000007bf1a40] flags 8 is not implemented. Update your FFmpeg version
to the newest one from Git. If the problem still occurs, it means that your file
has a feature which has not been implemented.
[exr @ 0000000007bf1a40] flags 8 is not implemented. Update your FFmpeg version
to the newest one from Git. If the problem still occurs, it means that your file
has a feature which has not been implemented.
[exr @ 0000000007bf1a40] Error while decoding stream #0:0: Not yet implemented i
n FFmpeg, patches welcome
Last message repeated 1 times1 times
[exr @ 0000000007bf1a40] Error while decoding stream #0:0: Not yet implemented i
n FFmpeg, patches welcome
is not implemented. Update your FFmpeg version to the newest one from Git. If t
he problem still occurs, it means that your file has a feature which has not bee
n implemented.
Last message repeated 6 times
Finishing stream 0:0 without any data written to it.
Nothing was written into output file 0 (Test_Beauty.mov), b
ecause at least one of its streams received no packets.
frame= 0 fps=0.0 q=0.0 Lsize= 0kB time=-577014:32:22.77 bitrate= -0.0k
bits/s speed=N/A
video:0kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing ove
rhead: unknown
Output file is empty, nothing was encoded (check -ss / -t / -frames parameters i
f used)
Conversion failed!
设置探测大小和分析时长似乎并没有真正的帮助。
>R:\_tools\ffmpeg_g183fd30\bin\ffmpeg.exe -y -probesize 100M -analyzeduration 100M -i Test_Beauty.%04d.exr -codec copy -c:v qtrle Test_Beauty.mov